BTM-26902-B01

Overview

The Knowles BTM-26902-B01 is an omnidirectional electret condenser microphone designed for analog audio capture. It features a sensitivity of -55.5dB ±3dB at 74dB SPL and operates with a rated voltage of 1.3 V. The component exhibits an impedance of 5.2 kOhms and supports a frequency range from 100 Hz to 6.4 kHz. With a compact depth of 1.7 mm, it is engineered for integration into space-constrained electronic devices requiring reliable sound input.

Feature Summary

• Omnidirectional acoustic pickup pattern for uniform sound reception
• Electret condenser transducer technology for analog signal output
• Compact physical profile suitable for miniaturized device integration

Applications

• Analog audio capture in compact consumer electronics
• Voice input modules for communication devices
• Sound sensing applications in portable equipment

Procurement Notes

Verify the specific part number suffix against official Knowles documentation to confirm exact electrical tolerances and packaging specifications. Ensure compatibility with existing circuit biasing requirements given the 1.3 V rated voltage and 5.2 kOhm impedance parameters. Cross-reference datasheet revisions to confirm RoHS compliance status and material composition before finalizing procurement orders.

Selection Notes

Select this component when an omnidirectional response is required for general-purpose audio capture in analog circuits. Consider the 1.3 V operating voltage and 5.2 kOhm impedance when designing pre-amplifier stages. The 1.7 mm depth constraint makes it suitable for thin form-factor designs where standard microphones may not fit physically.

Part Context

This microphone belongs to the Knowles BTM series of electret condenser microphones. These components are typically utilized in applications demanding high-fidelity analog audio input within small footprints. The series emphasizes reliability and consistent performance across varying environmental conditions for embedded audio systems.

Replacement Considerations

Consult official Knowles substitution guides for verified equivalents. Generic replacements may differ in sensitivity tolerance or impedance characteristics.